JP4051460B2 - Mower collector for tractor - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a tractor mower collector that receives mowing grass from a mid mower loaded on a tractor and accommodates it in the rear part of the fuselage, and in particular, prevents a catch when discharging mowing grass by a dumping operation while ensuring a large accommodation capacity of the mowing grass. It is related with the mower collector for tractors which enables efficient discharge.
[0002]
[Prior art]
2. Description of the Related Art A tractor mower collector that receives mowing grass from a mid mower loaded on a tractor and accommodates it in the rear of the fuselage is known (see Patent Document 1, Patent Document 2, etc.). The collector is a wide basket-like air-permeable box-type container that is attached to the rear part of the aircraft with a width dimension that spans the rear wheel width (extends the rear wheel width or exceeds the rear wheel width), in order to ensure a large storage capacity. In addition, an introduction part arranged so as to enter between the left and right rear wheels to a position close to the fuselage frame is connected with a guide path between the introduction part and the midmoor, thereby sending out the airflow from the midmoor. Store the cut grass. Moreover, the collector is rolled by the provided dump mechanism, and the cut grass in the collector can be discharged collectively by turning the opening downward.
[Patent Document 1]
JP 2000-50715 A [Patent Document 2]
Japanese Patent Laid-Open No. 10-56844
[Problems to be solved by the invention]
However, since the introduction part of the collector enters between the left and right rear wheels and the frontage dimension is limited, even if the collector is turned downward by the dump mechanism, the narrow introduction part may be damaged and the grass will be clogged. There is a problem that it takes time for weeding.
[0004]
An object of the present invention is to provide a mower collector device for a tractor capable of efficiently discharging by preventing a catch when discharging mowing grass by a dumping operation while ensuring a large accommodation volume of mowing grass. .
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention is a box-type collector that accommodates cut grass received from a midmoor loaded on a tractor at a rear position from the rear wheel, and is formed in a width dimension that spans the width of the rear wheel. In a mower collector device for a tractor provided with a dump mechanism that discharges the contents by rolling the collector,
The box-type collector includes a substantially tunnel-shaped introduction part for guiding the cut grass through the space between the left and right rear wheels on the front wall part, and the front wall part including the introduction part is separated from the box-type collector. The bottom of the box-type collector is provided with an extended bottom plate that extends to the bottom of the introduction part on the front side, and the bottom of the introduction part can be opened by this extension bottom plate. and wherein the configuring the.
[0006]
The box-type collector receives cut grass from the midmoor through a tunnel-like introduction portion provided on the front surface portion thereof, and accommodates and stores the cut grass together with the introduction portion. When discharging the stored mowing grass from the box-type collector, if the box-type collector is rolled by the dump mechanism, the box-type collector is separated from the introduction part and rolled with its full width open, Mowed grass is discharged at once.
Since the above extended bottom plate extends from the bottom of the box-type collector to the bottom surface of the introduction part, when the box-type collector is dumped, it is turned down to the bottom of the introduction part, and is therefore accommodated in the box-type collector and its introduction part. The cut grass is discharged at once.
[ 0007 ]
【The invention's effect】
The tractor mower collector apparatus of the present invention has the following effects.
The mower collector device for a tractor configured as described above is configured so that the entire width of the box-type collector can be opened, and the internal mowing grass is discharged in a lump by the dumping operation, so that the storage capacity can be secured by the wide box-type collector. In addition, even when the dumping operation is performed, it is possible to efficiently and efficiently discharge the mowed grass at a time without bothering people.
[0008]
The extended bottom plate allows the cut grass to be discharged in a lump for the area extending to the introduction portion, so that the cut grass feed path is secured for the next mowing operation after dumping, without causing retention or clogging due to residual mowing grass. It is smoothly sent from the introduction part to the box-type collector.
[ 0009 ]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments specifically configured based on the above technical idea will be described below with reference to the drawings.
[ 0010 ]
A perspective side view of a configuration example of the mower collector device for a tractor of the present invention is shown in FIG. 1, and a plan view thereof is shown in FIG. 1 and 2, the tractor is loaded with a mid-mower 4 for mowing between a front wheel (not shown) and the rear wheels 3 and 3, and is a box-shaped collector attached to the rear position of the rear wheels 3 and 3 ( (Mount collector) comprising a box-type collector (5) and a dump mechanism (7).
[ 0011 ]
The collector 5 is a wide cage-shaped breathable box-shaped container formed in a width dimension that extends to the width of the rear wheel (extends the width of the left and right rear wheels or one of the wheels). A fulcrum 6 is formed at the upper front end of the collector 5 so as to be pivotally supported by the machine body, and an arm 8 for projecting the collector 5 is projected, and a dump mechanism 7 such as a cylinder is connected to the tip. The dump mechanism 7 rolls in a predetermined angle range (approximately 90 ° counterclockwise on the paper surface of FIG. 1) so that the collector 5 opens downward via the arm 8.
[ 0012 ]
The front wall portion 5 a of the collector 5 is provided with a substantially tunnel-shaped introduction portion 11 disposed so as to enter between the left and right rear wheels 3 and 3 up to a position close to the body frame 9. The wall portion 5a is configured separately from the collector 5 so as to be openable in its full width. The bottom surface of the introduction part 11 is configured to be openable by an extended bottom plate 12 extending from the bottom surface of the collector 5. The introduction section 11 and the midmoor 4 are connected by a guide path (shooter) 13.
[ 0013 ]
The mower collector apparatus having the above configuration receives the cut grass from the mid mower 4 through the guide path 13 through the tunnel-like introduction portion 11 provided on the front side of the collector 5 and accommodates and stores the cut grass together with the introduction portion 11. When the stored cut grass is discharged from the collector 5, the collector 5 is dumped by the dump mechanism 7. By this dumping operation, the collector 5 is separated from the separate introduction portion 11 and turned downward with the full width of the front wall portion 5a on the front surface thereof being opened, so that the internal cut grass is discharged all at once. Therefore, the mower collector device for a tractor having the above configuration efficiently discharges the mowing grass in a lump without bothering humans when the collector 5 is dumped after securing the storage capacity with the wide collector 5. Is possible.
[ 0014 ]
Further, since the extended bottom plate 12 extends from the bottom of the collector 5 to the bottom surface of the introduction portion 11, when the collector 5 is dumped, the bottom plate 12 is integrally turned downward including the bottom surface of the introduction portion 11. That is, the mowing grass accommodated in the collector 5 and its introduction part 11 is discharged in a lump in a range extending to the introduction part 11 by the dumping operation of the collector 5. In addition, since the narrow guide path 13 can be configured to be short, retention and clogging due to residual mowing grass can be reduced. As a result, a cut grass feed path is secured for the next mowing operation, and the cut grass from the mid mower 4 can be smoothly fed from the introduction portion 11 to the collector 5 for efficient grass collection. Therefore, it is possible to substantially increase the capacity of the collector 5 and improve the grass collection efficiency.
[ 0015 ]
Next, the midmower 4 will be described with reference to the cross-sectional view of FIG. Hereinafter, the same members as those described above are denoted by the same reference numerals, and the description thereof is omitted. The bevel gear case 27 is used when the midmoor 4 loaded in a liftable manner between the front and rear wheels of the tractor receives power from the PTO 21 via the transmission shaft 23a including the universal joints 23 and 23 and rotationally drives the blade 25 by the belt 24 transmission. The main pulley 29 is formed larger than the outer diameter of the bevel gear case 27, and the belt 24 is disposed at a relatively low position B on the outer periphery of the bevel gear case 27 so as to overlap the bevel gear case 27. Thus, the folding angle θ of the universal joints 23 and 23 can be reduced by making the belt 24 overlap the bevel gear case 27 and lowering the belt line B to reduce the overall height H of the blade portion. The durability can be improved and the lift height of the midmoor 4 can be ensured.
[ 0016 ]
As another configuration example of the bevel gear case, as shown in the plan view of the midmower in FIG. 4, the cross-sectional view (a) and the perspective view (b) of the bevel gear case in FIG. Arranged close to the working range (blade part). The bevel gear case 31 is formed in a shape that is partially retracted so that a part of the bevel gear 33a on the pulley shaft 33 side overlaps the blade portion in plan view. In this way, by increasing the length between the universal joints 23 and 23 of the transmission shaft 23a connected to the bevel gear case 31, the angle of bending of the axis can be reduced, so that the durability can be improved.
[ 0017 ]
With respect to the internal configuration of the mid mower, as shown in the cross-sectional view (a) of FIG. 6, the idler blade 43 is pivotally supported on the blade shaft 45 in the vicinity of the mower deck 41. The idler blade 43 includes a frame 43a having a shape along the lower surface of the mower deck 41 and a resistance plate 44, as shown in an enlarged view of a main portion of the idler blade 43 in FIGS. 6B and 6C and a perspective view thereof. The blade 45a is pivotally supported via a bush 46, and the blade 45a receives the rotating wind force from the resistance plate 44 and rotates. The idle blade 43 can drop the cut grass A attached to the inside while suppressing power consumption. In particular, when mowing the wet grass, it is possible to effectively prevent clogging due to the grass that adheres and accumulates in a snowman manner.
[ 0018 ]
Next, a high dump collector structure will be described. As shown in the side view of the tractor having the high dump collector in FIG. 7, a part of the lower half 13 a of the shooter 13 is attached to the introduction frame 53 of the collector 51. Specifically, as shown in an enlarged view (a) of the main part in FIG. 8 and a partial view (b) in the direction of arrow A, the bottom part of the lower half part 13a of the shooter 13 is divided into front and rear parts, and the collector 51 side The split bottom plate 54 is supported on the introduction frame 53 by a support shaft 54a in a flip-up manner, and a reversing cylinder (described later) is attached. The shooter 13 is attached to the body frame 9 via a mounting plate 13d, and the lower half 13a thereof is movably supported on the support shaft 13b, and the spring 13c is caused to follow the lower half 13a corresponding to the lift operation of the mower 4. Energize with.
[ 0019 ]
The dump mechanism of the collector 51 has a side view at the time of dumping as shown in FIG. 9 and a sectional view taken along line AA (a) and a sectional view taken along line BB (b) shown in FIG. A support frame 61 of the collector 51 is supported from the attached gate frame 57 via a parallel link 59, an introduction frame 53 is disposed in front of the support frame 61, and a cylinder 63 that opens and closes the divided bottom plate 54 on the introduction frame 53 is provided. Provide.
[ 0020 ]
When the collector 51 is dumped, the collector 51 is moved backward so as to be swung out in a fixed posture by the parallel link 59. At this time, the split bottom plate 54 separated from the shooter 13 is flipped up to hold the front surface of the collector 51. The contained items can be collectively discharged by holding the contained items and rolling backward so as to open the collector 51 from the introduction frame 53. At the lowered position after dumping, the bottom plate 54 functions as a bottom surface of the lower half 13a of the shooter 13 by opening the divided bottom plate 54 forward.
[ 0021 ]
As another example of the structure of the shooter, as shown in the side view (a) of FIG. 11 and the AA sectional view (b) thereof, the shooter 13 movably supports the lower half 13a on the support shaft 13b, In addition to urging by the spring 13c to follow the lift operation of the mower 4, a stopper 71 that holds the lower half 13a in an open position and restricts the follow-up operation is provided to be able to advance and retreat.
[ 0022 ]
The lower half 13a of the shooter 13 is held in an open position by restricting the following movement of the lower half 13a by advancing the stopper 71. Therefore, when the mower 4 is assembled after maintenance, etc. Thus, the mower 4 can be moved and the discharge port 4a can be assembled to the shooter 13 without requiring a pressing operation for opening the lower half 13a.
[Brief description of the drawings]
1 is a perspective side view of a configuration example of a mower collector device for a tractor of the present invention. FIG. 2 is a plan view of the mower collector device of FIG. 1. FIG. 3 is a cross-sectional view of a mid mower. 5] Sectional view (a) and perspective view (b) of bevel gear case
6 is a cross-sectional view of the internal configuration of the midmoor (a), an enlarged view of the main part of the idler blade (b), and a perspective view thereof (c).
FIG. 7 is a side view of a tractor equipped with a high dump collector. FIG. 8 is an enlarged view of a main part (a) and a partial view of the A arrow (b).
9 is a side view at the time of dumping. FIG. 10 is a cross-sectional view taken along line AA in FIG. 9 and a cross-sectional view taken along line BB in FIG.
FIG. 11 is a side view of another example of the configuration of a shuter and a cross-sectional view taken along line AA of FIG.
[Explanation of symbols]
3 Rear wheel 4 Midmoor 5 Box collector (collector)
5a Front wall part 6 Support point 7 Dump mechanism 8 Arm 9 Airframe frame 11 Introduction part 12 Extension bottom plate 13 Shuter (guideway)
29 main drive pulley 31 bevel gear case 43 idler blade 43a frame 44 resistance plate 54 split bottom plate 54a spindle 63 cylinder 71 stopper B belt line H total height θ angle

Claims (1)

A box-shaped collector that accommodates the mowing grass received from the midmoor loaded on the tractor at a rear position from the rear wheel, and has a width dimension that spans the width of the rear wheel,
In the mower collector device for a tractor provided with a dump mechanism that discharges the contained material by rolling this box-type collector,
The box-type collector includes a substantially tunnel-shaped introduction part for guiding the cut grass through the space between the left and right rear wheels on the front wall part, and
The front wall part including this introduction part is configured separately from the box-type collector, so that the entire width can be opened,
Furthermore, the bottom part of the box-type collector is provided with an extended bottom plate that extends to the bottom surface of the front introduction portion, and the bottom surface of the introduction portion is configured to be openable by the extended bottom plate. .

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